On the first class, you will make contracts to grade, deliver, and put on three perches of limestone where the old bed remains firm, and four perches where the old bed has disappeared, requiring the grade to be finished by the 15th of October; and if the metal is all prepared by that date, to be put on by the 1st of November, the contractor continuing to rake the road, change the travel, and preserve the whole work in order, until the succeeding 1st of April. Should the contractor, however, not be able to prepare the metal to put it on the road by the 1st of November, then he is to preserve the grade of the road in order until the first favorable state of the weather after the 15th of March ensuing, when he is to put on the metal, raking and smoothing the surface for twenty days after the whole metal shall have been put on the road. You will observe that the contract is to call for preserving the road in either case during the winter; in one case, by adding metal, raking, &c., and in the other, by breaking with a sledge stone to fill the ruts, covering such stone in the spring lightly before putting on the metal. The second class of work is the unfinished part of last year's operations, upon which there will be time to put three and a half additional perches per rod on such parts as were covered last year, and four perches per rod on such as had none, requiring that it be put on by the 1st of November, and be preserved, raked, &c., until the succeeding 1st of April, during the winter filling ruts made by travel with additional metal, to be prepared and ready at convenient points on the road. For the culverts you will make a contract with one person for all that may be necessary on half your section, and with a second person for the other half, the work to be paid by the perch of twenty-five cubic feet, measured by the plan and dimensions you shall designate for each locality, and according to which plan the work must be constructed. For this work you will require the stone to be of good proportions, with parallel beds and faces, and not smaller than two cubic feet in each piece, in no case ever permitting a stone to be placed "on edge," a very common practice, destructive of good masonry. The covering stone to be of such additional dimensions as you shall judge necessary for each locality. The bottoms of the culverts to be paved or flagged with stone, and such an apron constructed at each end as to guard against the ends being undermined by the passage of the water.